T
treez
Guest
Hello,
In the attached 6W Buckboost LED driver schematic, the high-side current sense is referred down to ground via the common base connected PNP (FMMT560Q).
Can you confirm, in this schematic, that collector and emitter currents are always likely to remain close in magnitude? (-even at high temperature and low Ic, where the datasheet does not discuss)
FMMT560Q datasheet
https://www.diodes.com/assets/Datasheets/FMMT560Q.pdf
LTspice simulation also attached
In the attached 6W Buckboost LED driver schematic, the high-side current sense is referred down to ground via the common base connected PNP (FMMT560Q).
Can you confirm, in this schematic, that collector and emitter currents are always likely to remain close in magnitude? (-even at high temperature and low Ic, where the datasheet does not discuss)
FMMT560Q datasheet
https://www.diodes.com/assets/Datasheets/FMMT560Q.pdf
LTspice simulation also attached